.APL File Extension

Track information file created by Monkey's Audio, a lossless audio compressor; contains metadata for an audio track, including the start and end location of the track within a source .APE file; may also include the artist, album, song name, length, and other track information.

APL files are used to jump to the correct position in an APE audio file. They are also used to display track information while playing music. APL files can be generated from .CUE files using the MakeAPL program, which is bundled with Monkey's Audio.

Map layer file used by ArcPad, a mapping tool used to analyze GIS data in the field; stores a subset of map layer properties for an exported ArcGIS map; includes symbology for displaying features, scales, and label expressions for the layer.

ArcPad layer files are used to study GIS data in the field with ArcPad, which runs on Windows mobile platform devices. APL files are exported by the ArcGIS application.

Plug-in added to ACDSee Photo Manager, an application used for organizing and touching up digital photos; contains functions that extend the capabilities of the software; often used to read digital camera RAW image formats or view file formats from other programs.